salt level

Joined
29 Oct 2008
Posts
9
Reaction score
0
Location
Port Elizabeth
Hi

Guys and gals I wonder if u can help me i've got a prblem keep my salt level stable in my tank it keeps on jumping up and down I'am using red sea coral pro
 

Mike

Retired Moderator
Joined
12 May 2007
Posts
7,859
Reaction score
31
Location
the Motherland
Do you top up with R/O water? how often do you top up and what levels are you reading? you should have an SG of 1.026 or 35ppt.
 
Joined
29 Oct 2008
Posts
9
Reaction score
0
Location
Port Elizabeth
I top up R/O water and at least every 2 weeks my reading at the moment is 1.010 before I top up it was 1.030, then it's was fine for a day or 2 then it went down to 1.010
 

Mike

Retired Moderator
Joined
12 May 2007
Posts
7,859
Reaction score
31
Location
the Motherland
How often do you top up? i would do it daily or get an auto top up unit, you need to do your best to keep all the water perameters as level as possible (i know that is easy to type, but tricky to do)
 

viper357

Admin
Joined
4 May 2007
Posts
29,904
Reaction score
1,418
What are you using to measure your salinity?

You need to topup daily, every 2 weeks is no good. Every day your water evaporates and as the water evaporates the salinity rises because the salt doesn't evaporate, only the water does, that is why you topup with plain RO water.
 
Joined
15 May 2007
Posts
2,899
Reaction score
118
Location
Bloemfontein
You need to topup daily, every 2 weeks is no good. Every day your water evaporates and as the water evaporates the salinity rises because the salt doesn't evaporate, only the water does
I cannot agree more - it's one of the most important things to do: DO DAILY TOPUPS using filtered fresh water (RO water).

The reason why other posters have asked about the type of instrument you use to test the salinity is that the so-called Swing Arm Hydrometers (the type normally sold by the common pet shops) are notoriously inaccurate if not used 100% correctly. You will get much more accurate readings using either a reputable glass floating hydrometer (with a resolution of 0.001 ppt or better) or a refractometer. Last time I checked (long ago...) a good glass hydrometer cost around R600 - R800 and a refractometer about R350 - R450. Check with the sponsors (Eco-Aquatics - Marine Aquariums of South Africa aQuality - Marine Aquariums of South Africa Dorry Pets - Marine Aquariums of South Africa Northlands Pets - Marine Aquariums of South Africa) for pricing and availability.

Having an accurate salinity meter is as vital as having good heaters - your tank will not live long without one.

Hennie
 
Joined
8 May 2007
Posts
1,473
Reaction score
3
Location
Auckland
Are you skimming? How much water are you removing via skimming?
 
Joined
27 Oct 2008
Posts
11
Reaction score
0
Location
Dublin, Ireland
Id use the refractometer rather the swing arm just my opinion I think they are more accurate and top up everyday to keep stability in the SG hope this helps
 

Top